import router from './router'
import store from './store'
import {Message} from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import {getToken} from '@/utils/auth' // get token from cookie
import getPageTitle from './utils/get-page-title'

NProgress.configure({showSpinner: false}) // NProgress Configuration

const whiteList = ['/login'] // no redirect whitelist

router.beforeEach(async (to, from, next) => {
    // start progress bar
    NProgress.start()

    // set page title
    document.title = getPageTitle(to.meta.title)

    // determine whether the user has logged in
    const hasToken = getToken()

    if (hasToken) {
        if (to.path === '/login') {
            // if is logged in, redirect to the home page
            next({path: '/'})
            NProgress.done()
        } else {
            if (!store.getters.addRouters.length) {
                store.dispatch('user/getUserMenu').then(res => {
                    store.dispatch('GenerateRoutes', {res}).then(() => {
                        router.addRoutes(store.getters.addRouters)
                        next({...to, replace: true})
                    })
                }).catch(err => {
                    console.log(err);
                });
            } else {
                next()
            }
        }
    } else {
        /* has no token*/
        const res = []
        store.dispatch('ResetRoutes', {res})
        if (whiteList.indexOf(to.path) !== -1) {
            // in the free login whitelist, go directly
            next()
        } else {
            // other pages that do not have permission to access are redirected to the login page.
            next(`/login?redirect=${to.path}`)
            NProgress.done()
        }
    }
})

router.afterEach(() => {
    // finish progress bar
    NProgress.done()
})
